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Originally posted by bpink21901 just_opinion....
I'm a little leery of your offer....fix the thermostat controls....or....a brick upside my head....both will make the hum go away and I'm not sure which solution you would be inclined to try.....LOL

I love it. A Home owner that got screwed and can still laugh. Good for you.

Do as beenthere said. Call this clown back and make him install an isolation relay. No Charge.